/Engine/Source/Runtime/Engine/Classes/Components/LineBatchComponent.h
void AddHalfCircle ( const FVector & Base, const FVector & X, const FVector & Y, const [FLinearColor](API\Runtime\Core\Math\FLinearColor) & Color, const float Radius, int32 NumSides, const float LifeTime, uint8 DepthPriority, const float Thickness, const uint32 BatchID )